题目内容

Tiffany is experimenting with sugar substitutes to find a way to make reduced calorie muffins. She decides to replace the sugar in the recipe with a sugar substitute. Unfortunately, when she tastes the muffins after she takes them out of the oven she finds that they are not sweet. What sugar substitute was most likely used?

Aspartame
B. Sucralose
C. Fructose
D. Xylitol

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DDT, a pesticide, was extensively used from the 1940s to 1970s. Choose the statement that best describes why its use has since been restricted in some countries.

A. It was not a very effective pesticide.
B. It breaks down rapidly in the environment.
C. It is acutely toxic to humans in milligram quantities.
D. It was implicated in the decline of the eagle population.

d) Compared to Scenario B, Scenario A has

A. greater exposure
B. equal exposure
C. less exposure

c) Compared to Scenario B, Scenario A has

A. greater susceptibility
B. equal susceptibility
C. less susceptibility

b) Compared to Scenario B, Scenario A has

A. greater hazard
B. equal hazard
C. less hazard

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